<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>菜单页面</h1>
    <a href="/admin/admin.html">管理页面</a>
    <a href="/role/role.html">角色页面</a>
    <a href="book/book.html">图书页面</a>
<a href="/logout">退出登录</a>
</body>
</html>